I'd actually like some confirmation on if that was even Hathor at the end of Killmonger. They technically didn't say... and that goddess had leopard spots, rather than resembling a lion. Course, gods can look however hey want (Bast and Hathor are proof of that). But we still technically don't know.
But yeah... the we need more gods and more god avatars in the BP mythos. It's an obvious are for the BP mythos to mine for new characters and rogues. It's sort of strange that it hasn't really been developed.